Why does my horse get worse itching in warm weather?

Read time: 3 minutes

Overview

Warm weather often makes itching worse in horses because flies and midges are more active, especially around the mane, tail, face, belly and lower legs. In some horses, the heat, sweat and longer turnout can also make the skin feel more irritated, so it’s common to see more rubbing, tail swishing or stamping in summer.

That said, not every itchy horse is reacting only to insects. Skin sensitivity, mud, sweat, grooming changes and underlying skin conditions can all play a part, so it helps to look at the pattern rather than assume it’s just the weather.

Things To Check

1. Notice when the itching is worst, such as at dawn, dusk, after turnout, after exercise or while the horse is standing near water or hedges.

2. Look for rubbing on the mane, tail, dock, face, chest or belly, and check whether the hair is broken or missing in those areas.

3. Check the skin for redness, small scabs, dandruff, swelling, heat or sore patches, especially where flies tend to bite.

4. See whether the horse is sweating more than usual or staying damp for long periods, as this can make irritation feel worse.

5. Think about any recent changes to turnout, grazing, bedding, grooming products or washing routine.

6. Check the stable and field for obvious fly pressure, such as swarms around muck heaps, standing water, field edges or poached areas.

7. Watch for changes in behaviour such as stamping, head tossing, tail swishing, restless standing or difficulty settling in the field or stable.

Common Causes

Flies and midges are the most common reason itching gets worse in warm weather. Some horses react more strongly to insect bites than others, so even a small amount of fly activity can cause a lot of irritation.

Seasonal skin sensitivity can also be a factor. A horse that is sweaty, muddy, overgroomed or washed too often may have a skin barrier that feels more reactive in hot weather.

Sweet itch is another common possibility in horses that itch mainly over the mane, tail and dock, especially when fly activity is high. It can look mild at first and then become more obvious as the season goes on.

Less commonly, persistent itching may be linked to another skin issue, such as allergies, parasites or infection. If the skin looks sore, scabby or keeps getting worse, it’s worth getting it checked.

What To Do

Start by noting when and where the itching happens. A simple pattern, such as worse in the evening or after turnout, can give you useful clues.

Keep the horse as comfortable as you can by reducing exposure at peak fly times where possible, improving stable and field hygiene, and managing sweat and mud carefully.

Check the skin daily so you can spot rubbing early. If the horse is breaking the skin or creating sore areas, try to prevent further rubbing while you work out the cause.

If the itching is seasonal and clearly linked to fly activity, a consistent summer routine often helps more than occasional changes. Keep turnout, grooming and washing as simple as practical, and avoid anything that seems to make the skin more irritated.

Products That May Help

For horses that struggle with fly-season itching, a summer care routine can be easier to keep up with when you have the right basics to hand.

Horse Fly Sprays & Summer Care

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